The gathering and spreading of ancient eastern and western civilizations reflects that if a civilization wants to remain young forever, it must actively absorb various foreign civilizations and improve them, because the exchange between civilizations will produce some new achievements. If we must pay attention to the "purity" of culture, it will be degraded and eliminated because of inbreeding from generation to generation. For example, Greece and Hebrew belong to two different cultural traditions, which are characterized by philosophy and religion respectively. However, the Mediterranean world after Alexander's Crusade merged these two different cultures, and it took hundreds of years from conflict to integration, which was full of military conflicts, political struggles, religious setbacks, cultural collisions and philosophical debates, and finally produced a world-wide religion-Christianity. Therefore, the proper integration of different civilizations will often produce a harmonious culture and bring security and satisfaction to members of society. Of course, social groups will hold different attitudes towards communication and integration, including liberals and conservatives. Generally speaking, people with high literacy and education are more willing to accept the integration of civilization. In addition, the growth and development of a civilization is not carried out in a closed state. It always adjusts and perfects its own imperfections in the conflict with various foreign civilizations, so it has stronger vitality.

The process of human communication is also the process of convergence and sublimation of different cultures. West Asia and Central Asia have always played the role of "bridge" in the cultural exchange between the East and the West. These "bridges" not only pass the eastern civilization to the west, but also pass the western civilization to the east; At the same time, the unique "bridge" culture has also had a great influence on the eastern and western civilizations. Even the civilizations belonging to the "bridge" itself are interactive, resulting in unique and splendid cultures-Sumerian culture, Babylonian culture, Persian culture, Greek culture, Arabic culture, and so on. This shows that no civilization can be closed and self-sufficient. If a civilization wants to remain young forever, it must actively absorb all kinds of foreign civilizations. If we must pay attention to the "purity" of culture, it will be degraded and eliminated because of inbreeding from generation to generation. Today, when the world is shrinking sharply, the continuous exchanges between human civilizations will inevitably converge into a human civilization.